751     if (rho < neP->eta2) delta *= neP->t1;                     /* shrink the region */  in SNESSolve_NEWTONTR()
850 …PetscOptionsReal("-snes_tr_t1", "t1", "SNESNewtonTRSetUpdateParameters", ctx->t1, &ctx->t1, NULL));  in SNESSetFromOptions_NEWTONTR()
883     PetscCall(PetscViewerASCIIPrintf(viewer, "    t1=%g, t2=%g\n", (double)tr->t1, (double)tr->t2));  in SNESView_NEWTONTR()
1021 …teParameters(SNES snes, PetscReal eta1, PetscReal eta2, PetscReal eta3, PetscReal t1, PetscReal t2)  in SNESNewtonTRSetUpdateParameters()  argument
1030   PetscValidLogicalCollectiveReal(snes, t1, 5);  in SNESNewtonTRSetUpdateParameters()
1039     if (t1 == PETSC_DETERMINE) t1 = tr->default_t1;  in SNESNewtonTRSetUpdateParameters()
1044     if (t1 != PETSC_CURRENT) tr->t1 = t1;  in SNESNewtonTRSetUpdateParameters()
1069 …ameters(SNES snes, PetscReal *eta1, PetscReal *eta2, PetscReal *eta3, PetscReal *t1, PetscReal *t2)  in SNESNewtonTRGetUpdateParameters()  argument
1079   if (t1) PetscAssertPointer(t1, 5);  in SNESNewtonTRGetUpdateParameters()
1087   if (t1) *t1 = tr->t1;  in SNESNewtonTRGetUpdateParameters()
1148   PetscObjectParameterSetDefault(neP, t1, 0.25);  in SNESCreate_NEWTONTR()